JPS6144369Y2 - - Google Patents
Info
- Publication number
- JPS6144369Y2 JPS6144369Y2 JP1981029139U JP2913981U JPS6144369Y2 JP S6144369 Y2 JPS6144369 Y2 JP S6144369Y2 JP 1981029139 U JP1981029139 U JP 1981029139U JP 2913981 U JP2913981 U JP 2913981U JP S6144369 Y2 JPS6144369 Y2 JP S6144369Y2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- gas separation
- electrodes
- matrix
- positive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000007789 gas Substances 0.000 claims description 28
- 238000000926 separation method Methods 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 229910002804 graphite Inorganic materials 0.000 claims description 10
- 239000010439 graphite Substances 0.000 claims description 10
- 239000011159 matrix material Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 239000003566 sealing material Substances 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 4
- 239000003792 electrolyte Substances 0.000 claims description 4
- 239000000446 fuel Substances 0.000 claims description 4
- 239000012495 reaction gas Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- VKJKEPKFPUWCAS-UHFFFAOYSA-M potassium chlorate Chemical compound [K+].[O-]Cl(=O)=O VKJKEPKFPUWCAS-UHFFFAOYSA-M 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 238000009279 wet oxidation reaction Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Description
【考案の詳細な説明】
本考案はマトリクス型燃料電池、詳しくは積層
ガス分離板間のガスシールに関するものである。[Detailed Description of the Invention] The present invention relates to a matrix type fuel cell, and more particularly to a gas seal between laminated gas separation plates.
この種電池は、電解液マトリクスと負・正ガス
電極よりなる単位セルと両面に前記各ガス電極背
面に夫々反応ガスを供給する溝列を形成したカー
ボン製ガス分離板とを交互に積重し、この積重体
を締付けて電池堆を形成している。 This type of battery consists of alternating stacks of unit cells consisting of an electrolyte matrix, negative and positive gas electrodes, and carbon gas separation plates on both sides of which groove rows are formed for supplying reactive gases to the back of each of the gas electrodes. , this stack is tightened to form a battery stack.
この場合隣接ガス分離板の周辺シール面に介在
するシール部材として、一般に電解質含浸マトリ
クス自体の延長部を利用するもの又はゴムシー
ト、フツ素樹脂シートなどの絶縁シートを用いる
ものは周知である。 In this case, it is well known that the sealing member interposed on the peripheral sealing surface of the adjacent gas separation plate generally utilizes an extension of the electrolyte-impregnated matrix itself or uses an insulating sheet such as a rubber sheet or a fluororesin sheet.
これらシール材はいづれも電解液である燐酸に
対し比較的安定な材料であるが、長時間使用にお
いても安定性のあるものはフツ素樹脂シートのみ
である。しかしこれは弾力性に乏しいために電池
構成材にわづかの寸法変化が生じてもこれを吸収
できないという問題がある。 All of these sealing materials are relatively stable against phosphoric acid, which is an electrolytic solution, but only the fluororesin sheet is stable even after long-term use. However, this has the problem that even slight dimensional changes in the battery constituent materials cannot be absorbed due to their poor elasticity.
本考案は隣接ガス分離板の各ガス電極に対する
周辺シール面に、シール材として膨脹黒鉛層と絶
縁シートとの混合シール材を用いるもので、膨脹
黒鉛層は炭素質でできているため長期間安定性を
有するは勿論特に弾力性・気密性にすぐれている
ので、フツ素樹脂シートなどの絶縁シートとの組
合せにより、耐久性のあるガスシール部を構成し
うる。 This invention uses a mixed sealing material of an expanded graphite layer and an insulating sheet as a sealing material on the peripheral sealing surface of each gas electrode of the adjacent gas separation plate.Since the expanded graphite layer is made of carbonaceous material, it is stable for a long time. Since it has excellent elasticity and airtightness, it can be used in combination with an insulating sheet such as a fluororesin sheet to form a durable gas seal.
こゝに云う膨脹黒鉛は黒鉛結晶構造の層間を拡
張処理したもので、その処理方法は黒鉛を例えば
濃硝酸と濃硫酸の混酸及び塩素酸カリウム、重ク
ロム酸カリウム等の強力な酸化剤を併用して湿式
酸化し、これを900℃以上の高温で急速加熱する
と前記層間が50〜1000倍にも膨脹する。 The expanded graphite referred to here is obtained by expanding the interlayers of graphite crystal structure, and the treatment method is to combine graphite with a mixed acid of concentrated nitric acid and concentrated sulfuric acid, and strong oxidizing agents such as potassium chlorate and potassium dichromate. When wet oxidation is performed and then rapidly heated at a high temperature of 900°C or higher, the interlayer expands 50 to 1000 times.
このようにして得た膨脹黒鉛は熱化学的に安定
で、特に成型性が極めて良好であつて結着剤など
全く必要とせず、簡単に適宜厚みのシートに成型
することができる。 The expanded graphite obtained in this way is thermochemically stable and has particularly good moldability, and can be easily molded into a sheet of an appropriate thickness without any need for a binder.
以下本考案の実施例を図について説明するに、
電池堆は負・正のガス電極１，２と電解質マトリ
クス３とよりなる単位セル間に、カーボン製ガス
分離板４が介在するよう交互に積重されている。
各ガス分離板４は、その上下両面に夫々水素ガス
の如き燃料ガスの供給溝５と空気の供給溝６とを
互に交錯する方向に配列形成し、負・正各電極
１，２の背面に夫々水素ガス及び空気が供給され
る。尚各電極の触媒層を夫々１′，２′で示す。 The embodiments of the present invention will be explained below with reference to the figures.
The battery stacks are alternately stacked with carbon gas separation plates 4 interposed between unit cells each consisting of negative and positive gas electrodes 1 and 2 and an electrolyte matrix 3.
Each gas separation plate 4 has fuel gas supply grooves 5 such as hydrogen gas and air supply grooves 6 arranged in intersecting directions on its upper and lower surfaces, respectively, and the back surfaces of each of the negative and positive electrodes 1 and 2. Hydrogen gas and air are supplied to each of the two. The catalyst layers of each electrode are indicated by 1' and 2', respectively.
各ガス分離板４の正負ガス電極２，１に対する
周辺シール面と隣接ガス分離板との間には、膨脹
黒鉛層７と耐熱絶縁シート例えばフツ素樹脂シー
ト８よりなる複合シール材が介在している。かく
て燃料ガス供給溝５及び空気供給溝６に夫々並行
な周辺シール面上の複合シール材が、夫々負極１
及び正極２に対するシール部を構成する。 A composite sealing material consisting of an expanded graphite layer 7 and a heat-resistant insulating sheet, such as a fluororesin sheet 8, is interposed between the peripheral sealing surface of each gas separation plate 4 for the positive and negative gas electrodes 2, 1 and the adjacent gas separation plate. There is. In this way, the composite sealing materials on the peripheral sealing surfaces parallel to the fuel gas supply groove 5 and the air supply groove 6, respectively, are attached to the negative electrode 1.
and constitutes a sealing portion for the positive electrode 2.
上述の如く本考案は、積重されるガス分離板の
周辺シール面に、膨脹黒鉛層とフツ素樹脂シート
の如き耐熱絶縁シートよりなる複合シール材を用
いたもので、膨脹黒鉛はその気密性、弾力性、耐
熱性により、極めて良好なパツキング材となり、
且ガス分離板間を絶縁する薄いシートとの組合せ
により、負・正反応ガス間のシールが完全に行は
れるなど、マトリツクス型燃料電池のガスシール
としてすぐれた特性を発揮する。 As mentioned above, the present invention uses a composite sealing material consisting of an expanded graphite layer and a heat-resistant insulating sheet such as a fluororesin sheet on the peripheral sealing surface of stacked gas separation plates. , elasticity, and heat resistance make it an extremely good packing material.
In combination with a thin sheet that insulates between the gas separation plates, it exhibits excellent properties as a gas seal for matrix fuel cells, such as complete sealing between negative and positive reaction gases.
第１図は本考案電池堆の要部斜面図、第２図は
第１図の−線による断面図、第３図は第１図
の−線による断面図でこれら第２図第３図は
隣接ガス分離板との関係も図示されている。
１，２……負・正ガス電極、３……電解質マト
リクス、４……ガス分離板、５……水素ガス供給
溝、６……空気供給溝、７……膨脹黒鉛層、８…
…耐熱絶縁シート。
Figure 1 is a perspective view of the main parts of the battery stack of the present invention, Figure 2 is a sectional view taken along the - line in Figure 1, and Figure 3 is a sectional view taken along the - line in Figure 1. The relationship with adjacent gas separation plates is also illustrated. 1, 2... Negative/positive gas electrode, 3... Electrolyte matrix, 4... Gas separation plate, 5... Hydrogen gas supply groove, 6... Air supply groove, 7... Expanded graphite layer, 8...
...Heat-resistant insulation sheet.
Claims (1)
単位セルと、両面に前記各ガス電極背面に夫々反
応ガスを供給する溝を配列形成したガス分離板と
を交互に積重したマトリクス型燃料電池におい
て、前記ガス分離板の前記各ガス電極に対する周
辺シール面に、膨脹黒鉛層と耐熱絶縁シートより
なる複合シール材を配設してなるマトリクス型燃
料電池。 In a matrix fuel cell in which a unit cell consisting of an electrolyte matrix and positive and negative gas electrodes, and gas separation plates having grooves arranged on both sides for supplying reaction gas to the back of each of the gas electrodes are stacked alternately, A matrix fuel cell comprising a composite sealing material made of an expanded graphite layer and a heat-resistant insulating sheet arranged on a peripheral sealing surface of the gas separation plate for each of the gas electrodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981029139U JPS6144369Y2 (en) | 1981-03-02 | 1981-03-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981029139U JPS6144369Y2 (en) | 1981-03-02 | 1981-03-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57143570U JPS57143570U (en) | 1982-09-09 |
| JPS6144369Y2 true JPS6144369Y2 (en) | 1986-12-13 |
Family
ID=29826754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981029139U Expired JPS6144369Y2 (en) | 1981-03-02 | 1981-03-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6144369Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009301837A (en) * | 2008-06-12 | 2009-12-24 | Fuji Electric Systems Co Ltd | Fuel cell, end sealing member and method of manufacturing end sealing member |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6010565A (en) * | 1983-06-30 | 1985-01-19 | Fuji Electric Corp Res & Dev Ltd | Seal structure for fuel cell |
| JP2007018924A (en) * | 2005-07-08 | 2007-01-25 | Fuji Electric Holdings Co Ltd | Fuel cell |
-
1981
- 1981-03-02 JP JP1981029139U patent/JPS6144369Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009301837A (en) * | 2008-06-12 | 2009-12-24 | Fuji Electric Systems Co Ltd | Fuel cell, end sealing member and method of manufacturing end sealing member |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57143570U (en) | 1982-09-09 |
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